飞 机 在 积 水 跑 道 起 降 过 程 的 溅 水 雾 化 研 究 进 展

The spray and atomization generated by the aircraft during taxiing on a water-contaminated runway will directly affect the safety of take-off and landing. According to the difference of formation mechanism,the process of spray and atomization can be divided into two main stages,namely the formation of tire spray pattern and the movement of water mist in the air flow field. First,this paper summarizes the landing gear model tests and the aircraft taxiing tests,and introduces the engineering estimation method based on the experimental results. Due to the complex physical mechanism involved,high test cost and difficulty in quantitative evaluation,the numerical study on this problem has received great attention. Second,a variety of numerical methods for simulating a tire rolling on a water-contaminated runway are illustrated. Among them,the Smoothed Particle Hydrodynamics(SPH)has a significant advantage in simulating water spray,based on which considerable studies are discussed. This paper describes the progress of numerical studies on water mist flow field based on the Discrete Phase Model(DPM). A numerical simulation platform for aircraft spray and atomization based on SPH and the Finite VolumeMethod combined with DPH is introduced. In addition,the research on the anti-splashing measures such as the chined tire is summarized. Finally,the future research directions of aircraft-generated spray and atomization are discussed and concluded in this paper.